73% (2001)

70% (2005)

75% (2009)

66% (2017)

73% (1997)

62% (2017)

62% (2021)

78% (2012)

75% (1989)

70% (1995)

58% (2014)

60% (1997)

69% (2012)

61% (2003)

59% (2010)

69% (1992)

59% (2014)

45% (2002)

78% (1998)

57% (2010)